/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <errno.h> #include <string.h> #include "pthreadP.h" #include <lowlevellock.h> int __pthread_getschedparam (threadid, policy, param) pthread_t threadid; int *policy; struct sched_param *param; { struct pthread *pd = (struct pthread *) threadid; /* Make sure the descriptor is valid. */ if (INVALID_TD_P (pd)) /* Not a valid thread handle. */ return ESRCH; int result = 0; /* We have to handle cancellation in the following code since we are locking another threads descriptor. */ pthread_cleanup_push ((void (*) (void *)) lll_unlock_wake_cb, &pd->lock); lll_lock (pd->lock); /* The library is responsible for maintaining the values at all times. If the user uses a interface other than pthread_setschedparam to modify the scheduler setting it is not the library's problem. In case the descriptor's values have not yet been retrieved do it now. */ if ((pd->flags & ATTR_FLAG_SCHED_SET) == 0) { if (__sched_getparam (pd->tid, &pd->schedparam) != 0) result = 1; else pd->flags |= ATTR_FLAG_SCHED_SET; } if ((pd->flags & ATTR_FLAG_POLICY_SET) == 0) { pd->schedpolicy = __sched_getscheduler (pd->tid); if (pd->schedpolicy == -1) result = 1; else pd->flags |= ATTR_FLAG_POLICY_SET; } if (result == 0) { *policy = pd->schedpolicy; memcpy (param, &pd->schedparam, sizeof (struct sched_param)); } lll_unlock (pd->lock); pthread_cleanup_pop (0); return result; } strong_alias (__pthread_getschedparam, pthread_getschedparam)